> However, the killer feature for me is that it has application Express (or APEX) included, which is a complete web application development framework, as well as Oracle restful data services (ORDS). With built-in application development and deployment, it is the only complete, full-stack data management platform I am aware of (enterprise level).

Yeah those architectures were nice in the 90s. We don't do that anymore, for a whole lot of reasons. Being locked in with such a nefarious vendor is such a big risk.